virtualbox – Ubuntu server 20.04 temporary failure in name resolution

I have installed ubuntu server 20.04 in VirtualBox and setup static ip address. now I am trying to install golang but shows this

“Resolving go.dev(godev)…failed:temporary failure in name resolution.
wget: unable to resolve host address ‘go.dev’

wget go.dev/dl/go1.20.3. linux-amd64.tar.gz

–2023-04-26 14:41:32– go.dev/d1/go1.20.3.1inux-amd64.tar.gz Resolving go.dev (go.dev)… failed: Temporary failure in name resolution. wget: unable to resolve host address ‘go.dev’

wget https ://golang.org/di/go1.20.3. 1inux-amd64.tar.gz

–2023-04-26 14:50:32– golang.org/dl/go1.20.3.1inux-amd64.tar.gz
Resolving golang.org (golang.org)… failed: Temporary failure in name resolution. uget: unable to resolve host address ‘golang.org‘